Zyoptix波前引导准分子激光原位角膜磨镶术治疗近视眼的临床疗效分析

Wavefront-guided laser in situ keratomileusis for myopia

目的 观察波前引导准分子激光原位角膜磨镶术 (LASIK)治疗近视眼的疗效。方法接受Zyoptix波前引导LASIK手术的近视患者 63例 (113只眼 )作为试验组 ,同期接受常规LASIK手术(Planoscan)的 3 3 5只眼作为对照组 ,对 2组的疗效进行比较。结果 2组术后屈光度数差异无显著意义 (t检验 ,P >0 .0 5)。试验组 3 3 .6%患眼 (3 8只眼 )术后裸眼视力优于其术前戴镜矫正视力 ,而对照组此比例为 17 0 % (57只眼 )。当瞳孔直径为 6mm时 ,对照组术后高阶像差RMS平均增加 10 0 % ,而试验组平均增加 3 5%。术后 6个月对照组对比敏感度接近术前水平 ,而试验组则略优于术前。结论 Zyoptix波前引导LASIK的术后视觉质量优于传统LASIK。 (中华眼科杂志 ,2 0 0 4,40 :9 12 )

Objective To compare the clinical results of wavefront -guided versus conventional LASIK surgery in the treatment of myopia. Methods One hundred and thirteen eyes underwent wavefront-guided LASIK (Zyoptix) and 335 eyes were received conventional LASIK surgery (Planoscan). Besides visual acuity and refractions, the higher order aberrations and contrast sensitivity are also compared after surgery. Results The postoperative refractions were not significantly different between the Zyoptix group and Planoscan group. 33.6% of Zyoptix patient and 17.0% of Planoscan patient respectively, had posto perative uncorrected visual acuity than their preoperative best corrected visual acuity. At 6 mm pupil size, the higher order RMS was increased by 100% in the Planoscan group, while in the Zyoptix group, it was increased only by 35% postoperatively. Six months after operation, the contrast sensitivity of Planoscan patients returned to their preoperative baseline. However, the Zyoptix patients had slightly better contrast sensitivity than their preoperative level. Conclusion Patients undergoing Zyoptix treatment have better quality of vision after surgery than Planoscan patients. (Chin J Ophthalmol, 2004,40: 9-12)